Results 251 to 260 of about 223,655 (302)

Velocity Slip Coefficient and the Diffusion Slip Velocity for a Multicomponent Gas Mixture

The Physics of Fluids, 1971
Simple and accurate expressions for the velocity slip coefficient and the diffusion slip velocity are obtained by applying a variational technique to the linearized Boltzmann equation for a multicomponent gas mixture.
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Slip velocities in agitated vessel crystallisers

Journal of Crystal Growth, 1972
Abstract Growth rates of ammonium alum crystals have been measured at different fluid velocities in a single crystal growth cell and a fluidised bed, and at different stirrer speeds in a turbine agitated vessel. To compare the latter with the former, it is necessary to know the particle-fluid slip velocity as a function of the impeller speed, and the
A.W. Nienow, P.D.B. Bujac, J.W. Mullin
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Nonlinear Smoluchowski slip velocity and micro-vortex generation

Journal of Fluid Mechanics, 2002
When an electric field is applied across a conducting and ion-selective porous granule in an electrolyte solution, a polarized surface layer with excess counter-ions is created. The depth of this layer and the overpotential V across this layer are functions of the normal electric field j on the granule surface.
Ben, Y., Chang, H.-C.
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Slip velocity and velocity inversion in a cylindrical Couette flow

Physical Review E, 2009
Velocity inversion in a nanoscale cylindrical Couette flow is investigated with the Navier-Stokes (NS) equation and molecular-dynamics (MD) simulation. With general slip boundary conditions in the NS equation, the flow can be classified into five distinct profiles. The condition of velocity inversion is explored in the whole space of four dimensionless
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Prediction of fluid velocity slip at solid surfaces

Physical Review E, 2011
The observed flow enhancement in highly confining geometries is believed to be caused by fluid velocity slip at the solid wall surface. Here we present a simple and highly accurate method to predict this slip using equilibrium molecular dynamics. Unlike previous equilibrium molecular dynamics methods, it allows us to directly compute the intrinsic wall-
Hansen, J. S., Todd, B. D., Daivis, Peter J.   +2 more
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A porous slider with velocity slip

Fluid Dynamics Research, 2012
A porous slider, i.e. a solid levitated by fluid injection from its porous bottom to reduce the sliding drag, is studied theoretically in this paper. Slip is present on both the slider and the ground. This three-dimensional problem is transformed to a set of high-order, nonlinear similarity equations.
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Velocity slip and temperature jump coefficients for gaseous mixtures. II. Thermal slip coefficient

Physics of Fluids, 2004
The thermal slip coefficient was calculated for a binary gaseous mixture on the basis of the McCormack kinetic model of the Boltzmann equation, which was solved by the discrete velocity method. The calculations were carried out for the three mixtures of noble gases: neon–argon, helium–argon, and helium–xenon.
Sharipov, Felix, Kalempa, Denize
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The velocity slip of polar fluids

Rheologica Acta, 1975
The theory of polar fluids, briefly reviewed and shown to be identical to the theory of micropolar fluids, is applied to five different viscometric flows and to the flow around a slowly rotating sphere. Comparing theoretical predictions with experimental results for the viscometric flows it is demonstrated that the theory may serve as a model for the ...
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Velocity slip and temperature jump coefficients for gaseous mixtures.  III. Diffusion slip coefficient

Physics of Fluids, 2004
The diffusion slip coefficient is calculated for binary gaseous mixtures on the basis of the McCormack kinetic model of the Boltzmann equation, which is solved by the discrete velocity method. The calculations are carried out for the three mixtures of noble gases: neon–argon, helium–argon, and helium–xenon.
Sharipov, Felix, Kalempa, Denize
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Slip velocity and slip layer thickness in flow of concentrated suspensions

Journal of Applied Polymer Science, 1998
The rheological characterization of highly filled suspensions consisting of a Newtonian matrix (hydroxyl-terminated polybutadiene), mixed with two different sizes of aluminum powder (30% and above by volume) and two different sizes of glass beads (50% and above by volume), was performed using a parallel disk rheometer with emphasis on the wall slip ...
Faezeh Soltani, Ülkü Yilmazer
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